diff --git a/scripts/upgrade b/scripts/upgrade
index c60b260..77a00cc 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -90,10 +90,10 @@ ynh_add_fpm_config --package="$extra_php_dependencies"
 #=================================================
 # INSTALL LYCHEE WITH COMPOSER
 #=================================================
-#ynh_script_progression --message="Installing BookStack with Composer..." --weight=5
+ynh_script_progression --message="Installing BookStack with Composer..." --weight=5
 
 # Install composer
-#ynh_install_composer --phpversion=$phpversion --workdir=$final_path --install_args="yes | --no-dev"
+ynh_install_composer --phpversion=$phpversion --workdir=$final_path --install_args="--prefer-source --no-dev"
 
 #=================================================
 # FINAL BOOKSTACK INSTALL